Detailed Product Description
Technical Parameters for JDQXF-220W (1~ 3) Voltage Transformers
1 Rated voltage 110/√3 kV
2 Highest voltage for equipment 126 kV
3 Rated frequency 50 (60) Hz
4 Rated secondary voltage
a) Measuring secondary winding 0.1/√3 kV
b) Protective secondary winding 0.1/√3 kV
c) Residual voltage winding 0.1 kV
5 Rated operating pressure of gas SF6 0.40 MPa
6 Minimun operating pressure of the gas SF6 0.35 MPa
7 Rated output and relative accuracy class (cosΦ=0.8 lag)
Winding | Measuring Winding | Protective Winding | Residual Voltage Winding | |||
Terminals Marking | 1a-1n | 2a-2n | 3a-3n | da-dn | ||
Accuracy Class | 0.2 | 0.5 | 0.5 | 0.5 | 3P | 3P |
Rated Output (VA) | 100 | 150 | 300 | |||
150 | 250 | 300 | ||||
75 | 100 | 75 | 300 | |||
Note: The thermal limit load for protective winding is 2000 (VA).
8 The system earthing mode is effectively earthed neutral system
9 Arcing distance ≥1010 (mm)
10 Creepage distance of outer insulation please see Table 1
Table 1
Pollution Protection Class | Class II (W1) | Class III (W2) | Class IV (W3) |
Creepage Disrancemm | ≥2520 | ≥3150 | ≥3906 |
